Hi, i have some questions for the very experienced people here, please help...
i apologize if this subject has been talked here, i searched and did not find any 100% clear info just some vague info.

Ok well, for Introduction, i can say that my dad has an 1980 F600 dump truck Std with dual, and with a 370-4v engine wich is losing power everyday, so he wanted to rebuild the engine but is very expensive (about $2,500dlls), and with this economic situation is impossible for the moment, he asked too for the prices of a used engine, but when he said that the engine is for an industrial truck the prices were very high too (about $2000 dlls).

Researching in the internet and overall in this usefull forum i have seen that the 370-4v shares a lot of components with his "bigger brothers" from the 385 family the 429 and the 460 engines, and looking for this engines in the used engines yards now i know that they are a lot cheaper than the 370, i saw some used 460's in $300 dlls near the san diego area, so my questions are:

-Can i swap a 460 or 429 in the truck instead of the 370 without any extra parts like mounts, etc ? Does the bellhousing/mounts fits like a bolt on (plug and play)?

-If thats a yes, wich engine you recommend most, the 429 or the 460 ?

-Is there a difference between a 460/429 from a pickup or car, apart from the oil pan ?

-Anybody here has done this swap ? how was it ?

-Do you have an extra advice ?

-Does the distributor from a 429 or a 460 fits the 370 ?

Thanks in advance for all the info and advices, me and my dad will appreciate the Help.

Jose Manuel

 

I can help some, but theres a lot I dont know as well so some of this might not be 110% correct.

First thing you need to study & learn are the block casting numbers. Numbers are located on the left side of the block right beside the starter motor & down under the intake in the lifter valley.
Numbers & letter in the lifter valley, left to right indicate the year, month, day the block was cast.

Block numbers starting with C = 60's year models, D = 70's, E = 80's, F = 90's. 385 series were made from 1968 to 1999

Heads,
60 & 70 year model casting numbers were located on the outside edge above the spark plug between # 1 & 2 cylinders left side & 7 & 8 on the right side.
80 & 90 models, those numbers are on the inside, underside of the head between intake ports 1 & 2 left side & 7 & 8 on the right side & the intake must be pulled to check them & even the heads pulled. Sometimes you can take a small mirror & with the intake off hold it in a way, down in the lifter valley & see the numbers. May need a little light as well.
Few days ago I was checking engine blocks & heads at a junk yard & took a piece of thin white paper, held in place over the head number & rubbed it & was enough greese there to put an impression of the number good enough to read. Kinda cave man but it worked.

Most of the car engines you find will be D1VE castings. Pickups, vans & trucks, D9TE.
Look for the TE at the casting number end indicating a truck engine.

A DOOV-C block was one of the thickest block castings & could find some with 4 bolt mains, but the 2 bolt should work just as well for what your intending to use it for.

Probably what you will need to think the most on, would be the heads, getting then up to par to do the task ask of them.
That dump truck will put a lot of load on the heads & in turn whole lot of heat, so things like Stellite or Carbide valve seats, Sodium filled or Inconal exhaust valves & quality guides pressed in will be needed for them to do the job.
I know some more, but out of times right now, so I'll let somebody else have the soap box for their input.
Neil

 

Thanks a lot for the help sir, i can see that you have a lot of experience.
Anyone else wants to share knoledge ?

 

Oh no, not me, I'm still a greenhorn newbie here & to the 460 engines but my hands have been greasey for 44 years.

Might take a little while for somebody to respond that realy knows about the swap your doing, if anyone has done such. The 370/429 & 460 blocks being about 95% same as each other, shouldnt be a problem on the engine fitting where the 370 was. Its just from the flywheel back that might bring on fitment problems.

Once you have the 370 & trans out of the truck & the 460 sitting, you could test fit everything & see if it will all match up.

Back of the blocks should be the same, but dont know about the end of the crankshaft if its the same bolt pattern, same OD or same ID where the pilot bearing would fit. End of the cranks probably going to make it a go or no go.
Neil

 

yes the crank ends are bigger on the 370. theyre fe size (1.85") vs regular 385 series (1.375") also the 370 has a small bore (4.050") vs the larger 429/460 bore (4.360") but otherwise the block is basically the same. the heads/intake/oil pump/oil pan/distributor all interchange and should be swapped from the 370 to the 460. id recommend getting a 460 over a 429 because it puts out more torque being 31ci bigger. the only issue youll have is youll need the flywheel for the year of 460 you get... if the 460 is from before 1979 (c8ve, c9ve, d0ve, d1ve block) youll need a neutral balance flywheel, if its a d9te block then youll need one for a 1979-1997 460.

 

Jose I've done this swap several times with no problems E Mail me for the details
Hotwrench

 

Hey hotwrench I am new to this site any way I also have some questions about 370 460 maybe you would be willing to help me with. I'm looking to mate the f700 5 spd to a 460 if that's possible any input would be much appreciated

 

Probably not gonna get much help from a 6 year old thread. I know the blocks will match up but I'm not sure about the flywheel.

 

Could you let me know what needs done to do the 370/460 engine swap

 

Try sending a PM to HOTWRENCH to see if he can help. I have only done minor tinkering with 370's.

 

I know this thread is old but I can't figure out how to create a new posting. I have an '82 f700 wrecker that has a 370 4v with a Clark 5 speed behind it. Today we had a catastrophic failure motor started knocking and is bellowing white smoke. The failure is on the left bank. I'm looking for options as a replacement engine. We have an 89 f250 with a 460 and I have a flywheel from a late 70s 391 that has been on a 460 be for. I know depending on the year of 460 the crank balance can differ. I know if our 370 crank isn't trashed I can put that in the 460 and not have to worry about flywheels. So what I'm curious about is 460's do not like high rpms and when we kick up our idle for the pto we run at about 3k-3.3k rpms. I'm thinking a 460 swap might not be the best idea for our truck. The other idea I'm kicking around in my head is an early 7.3l diesel but don't know if the 370 bell housing will bolt up. Any help or ideas would be great. Thanks

 

I put a 460 in my 81 F700 as far as RPM's go running down the road I am at about 3300/3500 R's and never had any problems. If you need more R's out of your PTO there are different gear combos in the PTO unit that will speed your shaft up. There are 2 speed gear boxes that increase PTO speed , these are hard to find many are used on winch applications to increase line speed. Any questions contact me'.

Have A Great day ---- John Ferguson

 

Talked to a machine shop today. The machine shop wants to know what pistons to use. Do you just use the stock 460 pistons or do you upgrade them to something else? We have a long block 460 that needs a cam. The block is out of a '89 f250 and we habe heads and intake off a '77 460. This motor is for a 1982 f700 medium duty wrecker. Has The Clark 5speed and split rear end and will have a 4bbl. The truck empty weighs just under 12k and has a fixed load of 26k. We're looking for a durable and reliable engine. Also NOT looking for 500hp. If non-stock parts are used for the build do you habe part numbers we can pass along to the machine shop? Thanks in advance.

 

The 460 I used was out of a box van is was rebuilt with all stock parts except the cam that was a RV grind. You must use a neutral balenced crank because the truck flywheel requires it or you will have vibration problems. Let me know if you need more info.


Have A Great Day --- HOTWRENCH

 

Do you know what the 370 flywheel is? Is it neutral balanced? If you use the 370 crank and harmonic balancer the 370 flywheel should be good to go correct? If not do you know anyway to determine if a flywheel is for an internal or external balanced engine? I know from hunting down parts a few years ago 460 flywheels are hard to come by in my area but not as rare as bellhousings. Thanks for your insight into this adventure hotwrench.